EP0036695B1 - Gitterschieber - Google Patents

Gitterschieber Download PDF

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Publication number
EP0036695B1
EP0036695B1 EP81200308A EP81200308A EP0036695B1 EP 0036695 B1 EP0036695 B1 EP 0036695B1 EP 81200308 A EP81200308 A EP 81200308A EP 81200308 A EP81200308 A EP 81200308A EP 0036695 B1 EP0036695 B1 EP 0036695B1
Authority
EP
European Patent Office
Prior art keywords
grating
strips
slide
top grating
silo
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81200308A
Other languages
English (en)
French (fr)
Other versions
EP0036695A1 (de
Inventor
Cornelis Josephus A. Louwers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weegwerktuigenfabriek Alfra BV
Original Assignee
Weegwerktuigenfabriek Alfra BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Weegwerktuigenfabriek Alfra BV filed Critical Weegwerktuigenfabriek Alfra BV
Publication of EP0036695A1 publication Critical patent/EP0036695A1/de
Application granted granted Critical
Publication of EP0036695B1 publication Critical patent/EP0036695B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/54—Gates or closures
    • B65D90/58—Gates or closures having closure members sliding in the plane of the opening
    • B65D90/60—Gates or closures having closure members sliding in the plane of the opening and having one or more openings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/54—Large containers characterised by means facilitating filling or emptying
    • B65D88/64—Large containers characterised by means facilitating filling or emptying preventing bridge formation
    • B65D88/66—Large containers characterised by means facilitating filling or emptying preventing bridge formation using vibrating or knocking devices

Definitions

  • the invention relates to a grating slide for delivering material from a silo or the like comprising a fixed bottom grating and an apertured top grating adapted to reciprocate with respect to the bottom grating.
  • Such a grating slide is known, for example, from Dutch Patent Application 6906937.
  • the top grating is displaceable between a completely closed state of the grating slide and a completely open state of the grating slide, whilst in many cases, when the grating slide is wholly or partly opened, the top grating can still be rapidly reciprocated with respect to a given medium position.
  • Such grating slides are, for example, very suitable for fast and accurately dosed delivery of material from the silo or the like.
  • silos are often stored powdery materials whose internal cohesion may vary, for example, may have strongly increased when the material has been stored in the silo for a given time, whilst the cohesion may furthermore be affected by temperature and humidity. It, therefore, often occurs that, when the grating slide is opened to deliver material from the silo, the material does not immediately flow away, but is retained in the silo. After some time, however, gravity may be able to overcome the cohesion of the material so that this material abruptly drops down, which may give rise to fluidization phenomena in the material moving through the opened grating slide. This particularly occurs when the slide is completely open.
  • the invention has for its object to provide a grating slide of the kind set forth, by which such inconvenient phenomena can be avoided.
  • this can be achieved by connecting with the top grating a plurality of strips located above the grating, disposed substantially perpendicularly above the passages of the top grating and having a width substantially equal to the width of the passages for acting on the material contained in a silo or the like.
  • the strips will act on the material located above the top grating in order to disturb the cohesion of this material so that the risk of retention of the material is avoided, whilst the strips constitute, in addition, a kind of screen for the passages of the top plate located beneath the strips, which has an advantageous effect on a controlled delivery of the material through these apertures.
  • a grating slide comprises a rectangular frame formed by two parallel, longitudinal beams 1 interconnected by transverse beams 2 and 3 extending at right angles to the end of the longitudinal beams 1.
  • the grating slide is provided with a fixed bottom grating formed by a plurality of parallel, relatively spaced, horizontal strips 4 extending between the longitudinal beams 1.
  • the top grating is formed by a plurality of parallel, relatively spaced strips 5 interconnected with the aid of a tie rod 6, which extends parallel to the longitudinal beams 1 and which can be reciprocated in known manner by means not shown.
  • the strips 5 of the reciprocatory top grating cover the passages of the grating slide located at the side of and between the strips 4 so that in this position of the top grating no material can be delivered from a silo or the like, the bottom side of which is provided with the grating slide shown in Figure 1.
  • To the strips 5 are fastened upwardly extending supports 16, with the aid of which strips 17 extending parallel to the strips 5 are connected with the strips 5.
  • the d.isposition of the strips 17 is such that, viewed in plan, a strip 17 covers at least substantially completely an interstice between two neighbouring strips 5.
  • the supports 16 and the strips 17 will immediately act as cutting and scraping members on the material directly located above the top grating, so that the cohesion of this material is disturbed and the material can flow away as soon as the passages of the grating slide are released to some extent by the strips 5.
  • the strips 17 then not only have an efficient loosening effect on the material located above the top grating in the silo or the like, when said top grating is displaced, but they also prevent the material, when the grating slide is opened, from flowing at a high rate through the interstices released by the strips 5 between the strips 4, since the strips 17, so to say, have a discharging effect on the pressure exerted on the material passing through said openings.
  • those parts which correspond with the parts referred to in Figure 1 have the same reference numerals and a further description of the construction or disposition of these parts is believed to be redundant.
  • grate-shaped strips 18 may be used rather than closed strips 17 and be formed by a plurality of narrow parallel strips so that the material can also flow through said grate-shaped strips.
  • Figure 3 shows an embodiment corresponding with the embodiment shown in Figure 1 of a grating slide, in which helical springs 19 are arranged between the upwardly extending supports. It will be obvious that the material located above the reciprocatory top grating can thus be very intensively influenced.
  • the turns of the helical springs 19 will also affect the material located above the top grating for breaking up the cohesion of said material.
  • the spring 19 preferably has such spring properties that upon such a displacement of the top grating it will start slightly vibrating. If the system in which the grating slide is incorporated is constructed so that in the desired, opened position of the grating slide the top grating is caused to move around a medium position, both the strips and the helical springs will continue exerting an advantageous agitating effect on the material, which contributes to a regular, undisturbed flow of material from a silo or the like.
  • Figure 4 shows an embodiment roughly corresponding with the embodiment shown in Figure 3, but further helical springs 20 are provided above the strips 17. It will be obvious that in this construction the material can be affected up to a fairly great height above the reciprocatory top grating by the various members arranged above the top grating.
  • the strips 17 are, for example, possible to arrange the strips 17 so as to be adjustable and/or independently displaceable with respect to the strips 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Food-Manufacturing Devices (AREA)

Claims (5)

1. Gitterschieber zur Ablieferung von Material aus einem Silo oder dgl. mit einem feststehenden Bodengitter (4) und einem mit Durchgängen versehenen oberen Gitter (5, 6), das in bezug auf das Bodengitter (4) hinund herbewegbar ist, d.g., dass mit dem oberen Gitter (5, 6) eine Anzahl von Streifen (17, 18) verbunden sind, die nahezu senkrecht über den Durchgängen im oberen Gitter angebracht sind, wobei die Streifen je eine Breite aufweisen, die nahezu gleich der Breite dieser Durchgänge ist.
2. Gitterschieber nach Anspruch 1 d.g., dass Schraubfedern (19, 20) oberhalb dem oberen Gitter (5, 6) angeordnet und daran befestigt sind.
3. Gitterschiebar nach Anspruch 2 d.g., dass die Mittellinien der Schraubfedern (19, 20) parallel zur Bewegungsrichting des oberen Gitters (5, 6) verlaufen.
4. Glitterschiebar nach einem der vorhergehenden Ansprüche d.g., dass die Streifen (18), die mit dem oberen Gitter (5, 6) verbunden sind, Öffnungen aufweisen.
5. Gitterschieber nach einem der vorhergehenden Ansprüche d.g., dass die mit dem oberen Gitter (5, 6) verbundenen Streifen (17, 18) in bezug auf das obere Gitter (5, 6) einstellbar sind.
EP81200308A 1980-03-20 1981-03-19 Gitterschieber Expired EP0036695B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8001647 1980-03-20
NL8001647A NL8001647A (nl) 1980-03-20 1980-03-20 Roosterschuif.

Publications (2)

Publication Number Publication Date
EP0036695A1 EP0036695A1 (de) 1981-09-30
EP0036695B1 true EP0036695B1 (de) 1984-03-07

Family

ID=19835029

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81200308A Expired EP0036695B1 (de) 1980-03-20 1981-03-19 Gitterschieber

Country Status (3)

Country Link
EP (1) EP0036695B1 (de)
DE (1) DE3162465D1 (de)
NL (1) NL8001647A (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0981856A (ja) * 1995-09-11 1997-03-28 Kyoto Jido Kiki Kk 粉粒体用ゲート及びそれを含む粉粒体用計量器
DE19640933A1 (de) * 1996-10-04 1998-04-09 Eckhard Lorenz Austragsvorrichtung für einen Silo, insbesondere auch für fließfähiges Schüttgut
US8714900B2 (en) * 2010-03-16 2014-05-06 Schwing Bioset, Inc. Wear system for receptacle with sliding frame
CN106697709A (zh) * 2017-01-05 2017-05-24 安徽润发生物能源科技有限公司 一种生物质燃料加工用料仓

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6901932A (de) * 1969-02-07 1970-08-11
FR2060007A1 (de) * 1969-05-06 1971-06-11 Weegwerktuigenfabr Al Ra
CH510577A (de) * 1970-02-06 1971-07-31 Buehler Ag Geb Siloaustragvorrichtung
US4176767A (en) * 1977-01-05 1979-12-04 Franche Darius C Iv Dog food dispenser

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6901932A (de) * 1969-02-07 1970-08-11
FR2060007A1 (de) * 1969-05-06 1971-06-11 Weegwerktuigenfabr Al Ra
CH510577A (de) * 1970-02-06 1971-07-31 Buehler Ag Geb Siloaustragvorrichtung
US4176767A (en) * 1977-01-05 1979-12-04 Franche Darius C Iv Dog food dispenser

Also Published As

Publication number Publication date
DE3162465D1 (en) 1984-04-12
EP0036695A1 (de) 1981-09-30
NL8001647A (nl) 1981-10-16

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